Mattress



FIG. 1 is a perspective view of a mattress and foundation, showing my new design;

FIG. 2 is a front elevational view of the mattress shown in FIG. 1;

FIG. 3 is a left side elevational view of the mattress shown in FIG. 1; and,

FIG. 4 is a top down view thereof.

The rear elevational view of the illustrated mattress is not shown because it is a mirror image of the proximal side view shown in FIG. 2.

The right side elevational view of the illustrated mattress is not shown because it is mirror image of the left side shown in FIG. 3.

The mattress is shown with a symbolic break in its length and width. The appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM I claim, the ornamental design for a mattress, as shown and described. 